The quilt patch titled
Subject: mm/mempolicy: weighted interleave checks wrong parameter
has been removed from the -mm tree. Its filename was
mm-mempolicy-protect-task-interleave-functions-with-tsk-mems_allowed_seq-fix.patch
This patch was dropped because it was folded into mm-mempolicy-protect-task-interleave-functions-with-tsk-mems_allowed_seq.patch
------------------------------------------------------
From: Gregory Price <gourry.memverge@xxxxxxxxx>
Subject: mm/mempolicy: weighted interleave checks wrong parameter
Date: Tue, 6 Feb 2024 14:28:53 -0500
weighted interleave presently checks (!node) when it should check
(!il_weight). This causes a wrong distribution of memory.
Link: https://lkml.kernel.org/r/20240206192853.3589-1-gregory.price@xxxxxxxxxxxx
Signed-off-by: Gregory Price <gregory.price@xxxxxxxxxxxx>
Reported-by: "Huang, Ying" <ying.huang@xxxxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: Hasan Al Maruf <Hasan.Maruf@xxxxxxx>
Cc: Honggyu Kim <honggyu.kim@xxxxxx>
Cc: Hyeongtak Ji <hyeongtak.ji@xxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Jonathan Corbet <corbet@xxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: Rakie Kim <rakie.kim@xxxxxx>
Cc: Ravi Jonnalagadda <ravis.opensrc@xxxxxxxxxx>
Cc: Srinivasulu Thanneeru <sthanneeru.opensrc@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/mempolicy.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/mempolicy.c~mm-mempolicy-protect-task-interleave-functions-with-tsk-mems_allowed_seq-fix
+++ a/mm/mempolicy.c
@@ -1881,7 +1881,7 @@ retry:
/* to prevent miscount use tsk->mems_allowed_seq to detect rebind */
cpuset_mems_cookie = read_mems_allowed_begin();
node = current->il_prev;
- if (!node || !node_isset(node, policy->nodes)) {
+ if (!current->il_weight || !node_isset(node, policy->nodes)) {
node = next_node_in(node, policy->nodes);
if (read_mems_allowed_retry(cpuset_mems_cookie))
goto retry;
_
Patches currently in -mm which might be from gourry.memverge@xxxxxxxxx are
mm-mempolicy-refactor-a-read-once-mechanism-into-a-function-for-re-use.patch
mm-mempolicy-introduce-mpol_weighted_interleave-for-weighted-interleaving.patch
mm-mempolicy-protect-task-interleave-functions-with-tsk-mems_allowed_seq.patch
